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Astrophotography and Sketching >> CCD Imaging & Processing

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jaddbd
professor emeritus


Reged: 05/18/05

Loc: Woodbine, MD
A Fiery bubble
      #6084932 - 09/16/13 10:41 PM

Bicolor HA OIII NGC 7635. I was not originally going for this color scheme, but as I was playing with the colors I thought it looked kind of cool with the flame theme. It works for me on my big monitor and Iphone, not so much on my stock dell monitor. So in the spirit of being a little different, here we go.

Small with specs:
http://www.astrobin.com/56758/

Fit to Screen:
http://www.astrobin.com/full/56758/?mod=none

Too Big:
http://www.astrobin.com/full/56758/0/?mod=none&real=

Thanks,

John D


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vpcirc
Post Laureate


Reged: 12/09/09

Loc: Merced CA
Re: A Fiery bubble new [Re: jaddbd]
      #6084953 - 09/16/13 10:48 PM

Wow love that processing!

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rigel123
Postmaster
*****

Reged: 06/29/09

Loc: SW Ohio
Re: A Fiery bubble new [Re: jaddbd]
      #6084963 - 09/16/13 10:54 PM

Great Bubble John, very 3D.

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Leonardo70
Pooh-Bah


Reged: 04/16/09

Loc: Turin - Italy
Re: A Fiery bubble new [Re: rigel123]
      #6085235 - 09/17/13 02:59 AM

Very nice.

All the best,
Leo


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jaddbd
professor emeritus


Reged: 05/18/05

Loc: Woodbine, MD
Re: A Fiery bubble new [Re: Leonardo70]
      #6086765 - 09/17/13 08:48 PM

Thanks guys

JD


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microstar
Pooh-Bah


Reged: 01/05/08

Loc: Canada
Re: A Fiery bubble new [Re: jaddbd]
      #6087102 - 09/17/13 11:41 PM

Very nice image. I'm interested in the processing details.
...Keith


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jaddbd
professor emeritus


Reged: 05/18/05

Loc: Woodbine, MD
Re: A Fiery bubble new [Re: microstar]
      #6087938 - 09/18/13 12:35 PM

Quote:

Very nice image. I'm interested in the processing details.
...Keith




QSI683/RC10 at F5.4
16 x 1200 HA
20 x 1200 OIII

Red = HA 100%
Green = HA 10%; OIII 90%
Blue = OIII 100%

Used Clipping Masks to blend color channels. The combined green channel ended up with a much more "left shifted" pedestal than the red and blue, and when I pulled the Red and blue channels to the left at the end to match, the overall image went a bit from the intended deeper red to the more fiery red/orange. I liked it, so I left it.

John D


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microstar
Pooh-Bah


Reged: 01/05/08

Loc: Canada
Re: A Fiery bubble new [Re: jaddbd]
      #6088579 - 09/18/13 06:13 PM

Thanks John. I was surprised at how much your bicolor image matched the color of the tri-filter natural-color narrowband image of the Bubble that I posted the same day. I think they match because the SII in this object pretty much follows the distribution of the Ha. So when you blended Ha into your green channel you highlighted the same "fiery regions" as the SII did in my version. Very interesting. I do like your version very much.
...Keith


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mcarroll
scholastic sledgehammer


Reged: 08/28/10

Loc: Greensboro, NC
Re: A Fiery bubble new [Re: microstar]
      #6088639 - 09/18/13 06:49 PM

Nice image John!

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jaddbd
professor emeritus


Reged: 05/18/05

Loc: Woodbine, MD
Re: A Fiery bubble new [Re: microstar]
      #6089060 - 09/18/13 10:40 PM Attachment (2 downloads)

Quote:

I was surprised at how much your bicolor image matched the color of the tri-filter natural-color narrowband image of the Bubble that I posted the same day. I think they match because the SII in this object pretty much follows the distribution of the Ha. So when you blended Ha into your green channel you highlighted the same "fiery regions" as the SII did in my version. Very interesting.




Thanks Mike & Keith.

Keith - Maybe also since I actually tried to balance the channels on the histogram, and the fact that the HA is so strong, the colors want to end up around where yours are. Yours has a more balanced look to it, plus the stars are pretty much correct. Here is (calibrated via bf-astro eXcalibrator) an unprocessed crop of RGB from CCDstack that I was planning to put in (got lazy and didn't) to enhance the stars. Yours stars match up pretty close. Pretty cool since it is all narrow band.

John D


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microstar
Pooh-Bah


Reged: 01/05/08

Loc: Canada
Re: A Fiery bubble new [Re: jaddbd]
      #6089134 - 09/18/13 11:20 PM

Quote:

Here is (calibrated via bf-astro eXcalibrator) an unprocessed crop of RGB from CCDstack that I was planning to put in (got lazy and didn't) to enhance the stars. Yours stars match up pretty close. Pretty cool since it is all narrow band.

John D




Yes, that is something I discovered when I started blending the yellow back into the natural-color narrowband palette - it seemed to add a more natural balance to the star color. Your RGB image confirms that impression - although I can't say I really understand why. Thanks for posting that John.
...Keith


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Bill W.
Carpal Tunnel
*****

Reged: 10/09/05

Loc: Western PA, USA
Re: A Fiery bubble new [Re: microstar]
      #6089676 - 09/19/13 10:25 AM

Looks good!

-Bill


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